类风湿性关节炎(Rneumatoid arthritis简称RA)是一种常见的以慢性炎症和免疫介导为特征的胶原血管性疾病,它侵犯着全身的结缔组织和血管。肺脏具有丰富的结缔组织和血管,故RA患者常同时伴有肺部病变。对此,早在1860年Fuller曾已提及;1897年,Still报道过3例年轻的RA患者的尸检中发现有胸水;1948,Ellman等首先报道3例RA患者合并有弥漫性肺纤维化。此后的有关报道更见增多。如有作者认为,若根据胸部X线表现再结合肺功能试验估价,RA患者肺部受侵 Rheumatoid arthritis (Rneumatoid arthritis RA) is a common collagen vascular disease characterized by chronic inflammation and immune-mediated invasion of whole body connective tissue and blood vessels. Lung is rich in connective tissue and blood vessels, so often accompanied by RA patients with lung disease. To this end, Fuller mentioned as early as 1860; in 1897, Still reported pleural effusion was found in autopsy of three young RA patients; in 1948, Ellman et al. First reported three cases of RA patients with diffuse pulmonary fibrosis. More relevant reports since then. If the author believes that if chest X-ray combined with pulmonary function test evaluation, RA patients with lung invasion